Foot-candles (fc)	Lux (lx)
1 fc	10.7639 lx
2 fc	21.5278 lx
5 fc	53.8196 lx
10 fc	107.6391 lx
25 fc	269.0978 lx
50 fc	538.1955 lx
100 fc	1076.39 lx
250 fc	2690.98 lx
500 fc	5381.96 lx
1000 fc	10763.91 lx

Convert Foot-candles to Lux

Convert foot-candles to lux (fc to lx) with our instant calculator. 1 fc = 10.76391 lx. Includes exact formula and reference tables.

How to Convert Foot-candles to Lux (fc to lx)

1 Foot-candle (fc) is equal to 10.76391 Lux (lx). Multiply the foot-candle value by 10.76391042

Quick Answer 1 fc = 10.76391 lx

Formula lx = fc × 10.76391042

Inverse Factor 1 lx = 0.092903 fc

Unit Definitions & Metrology Context

The SI unit of illuminance is the lux (lx), which equals one lumen per square meter (1 lx = 1 lm/m²). It quantifies the intensity of light falling on a given surface.

About Foot-candles (fc): Foot-candle (fc) is a unit in the Illuminance measurement category. It is widely used in us architectural & photography lighting (1 lm/ft²). Relative to the illuminance base unit, 1 fc equals 10.76391 Lux (lx).

About Lux (lx): Lux (lx) is a unit in the Illuminance measurement category. It is widely used in si standard illuminance (1 lumen/m²). The lux (lx) serves as the primary reference base unit for the illuminance domain.

Need to convert in the opposite direction? Visit our Convert Lux to Foot-candles (lx to fc) calculator (1 lx = 0.092903 fc).

Step-by-Step Worked Examples (fc to lx)

Convert 5 Foot-candles to Lux: Applying the formula (lx = fc × 10.76391042): starting with 5 fc, multiply the foot-candle value by 10.76391042 to get 53.8196 lx.
Convert 10 Foot-candles to Lux: Applying the formula (lx = fc × 10.76391042): starting with 10 fc, multiply the foot-candle value by 10.76391042 to get 107.6391 lx.
Convert 50 Foot-candles to Lux: Applying the formula (lx = fc × 10.76391042): starting with 50 fc, multiply the foot-candle value by 10.76391042 to get 538.1955 lx.

Popular Illuminance Conversions

Lux ⇄ Foot-candle

Multiply lux by ~0.092903 to calculate illuminance in foot-candles (or divide lux by 10.7639).

Foot-candle ⇄ Lux

Multiply foot-candles by ~10.7639 to convert to lux (1 fc ≈ 10.764 lx).

Kilolux ⇄ Lux

1 kilolux equals exactly 1,000 lux (typical overcast daylight is 1–10 klx).

Phot ⇄ Lux

1 phot equals exactly 10,000 lux (1 lumen per square centimeter).

Frequently Asked Questions

Verified answers and formulas for converting foot-candles to lux.

How many lux are in 1 foot-candle?

There are 10.76391 lux (lx) in 1 foot-candle (fc). Conversely, 1 lux equals 0.092903 foot-candles.

How do you convert foot-candles to lux?

To convert foot-candles (fc) to lux (lx), use the formula: lx = fc × 10.76391042. Multiply the foot-candle value by 10.76391042. For example, 10 fc equals 107.6391 lx.

How do I convert back from lux to foot-candles?

To convert in the reverse direction from lux (lx) to foot-candles (fc), use the inverse formula: fc = lx × 0.09290304. Multiply the lux value by 0.09290304 (1 lx = 0.092903 fc).

What is the difference between foot-candle (fc) and lux (lx)?

Both foot-candle and lux measure illuminance. Foot-candle (fc) is a unit in the Illuminance measurement category. It is widely used in us architectural & photography lighting (1 lm/ft²). Relative to the illuminance base unit, 1 fc equals 10.76391 Lux (lx). Lux (lx) is a unit in the Illuminance measurement category. It is widely used in si standard illuminance (1 lumen/m²). The lux (lx) serves as the primary reference base unit for the illuminance domain.

How do you convert foot-candles (fc) to lux (lx)?

Multiply the foot-candle value by 10.7639. For example, standard office lighting of 50 fc equals approximately 538.2 lux (50 × 10.7639 ≈ 538 lx).